fix(changelog): restore removed lines and update entry

Signed-off-by: undefinedIsMyLife <shinetina169@gmail.com>

Author: undefinedIsMyLife

CHANGELOG.md

@@ -7,7 +7,7 @@ This changelog is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.
 ## [Unreleased]
 
 ### Added
-
+- Add examples/token_create_transaction_pause_key.py example demonstrating token pause/unpause behavior and pause key usage (#820)
 ### Changed
 
 - Removed duplicate import of transaction_pb2 in transaction.py
@@ -17,12 +17,13 @@ This changelog is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.
 ## [0.1.9] - 2025-11-26
 
 ### Added
-- Add `examples/token_create_transaction_pause_key.py` example demonstrating token pause/unpause behavior and pause key usage (#820)
 
+- Removed `actions/checkout@v4` from `bot-verified-commits.yml`
 - Add comprehensive documentation for `ReceiptStatusError` in `docs/sdk_developers/training/receipt_status_error.md`
 - Add practical example `examples/errors/receipt_status_error.py` demonstrating transaction error handling
 - Document error handling patterns and best practices for transaction receipts
-
+- fix `pull_request` to `pull_request_target` in `bot-verified-commits.yml`
+- Add more robust receipt checks and removed fallback to `examples/tokens/token_delete_transaction.py`
 - Add detail to `token_airdrop.py` and `token_airdrop_cancel.py`
 - Add workflow: github bot to respond to unverified PR commits (#750)
 - Add workflow: bot workflow which notifies developers of workflow failures in their pull requests.